The dollar will meet reality on the foreign exchange market.
With Joe Biden as their puppet, the Chicoms will realize their wet dream of replacing the dollar with the yuan as the world's reserve currency. That's when things go "Boom!" Bankruptcy and Weimar style turbo inflation.
That happens everyday. Of course all of the other currencies meet reality everyday too. There is a global debt problem, and it's a matter of choosing the least worst to be the reserve.
Of course there is always a gold (or other) standard that could be resorted to, but that would not support the global debt structure that exists now.